Add labels, fix tornado effect.

demo.lua

@@ -12,13 +12,17 @@ local bdesc = blackdot:gsub("%^", "\\^"):gsub(":", "\\:")
 local frame = "[combine:16x16:0,0=" .. bdesc .. ":15,0=" .. bdesc
 .. ":0,15=" .. bdesc .. ":15,15=" .. bdesc
 
-local function regdemo(num, func)
+local function regdemo(num, desc, func)
 	return minetest.register_node(modname .. ":demo" .. num, {
+			description = desc,
 			drawtype = "allfaces",
 			tiles = {{name = frame, backface_culling = false}},
 			groups = {[modname] = 1},
 			paramtype = "light",
 			sunlight_propagates = true,
+			on_construct = function(pos)
+				return minetest.get_meta(pos):set_string("infotext", desc)
+			end,
 			on_punch = function(pos) return minetest.remove_node(pos) end,
 			on_demo = func
 		})
@@ -34,7 +38,7 @@ minetest.register_abm({
 		end
 	})
 
-regdemo(1, function(pos)
+regdemo(1, "ASMD ShockRifle Effect", function(pos)
 		local endpos = {
 			x = pos.x + math_random() * 20 - 10,
 			y = pos.y + math_random() * 20 - 10,
@@ -59,9 +63,9 @@ regdemo(1, function(pos)
 			})
 	end)
 
-regdemo(2, function(pos)
+regdemo(2, "Implosion / Teleport Arrive", function(pos)
 		minetest.add_particlespawner_advanced({
-				amount = 25,
+				amount = 100,
 				time = 0,
 				pos = {
 					x = {pos.x, -10, 20},
@@ -84,21 +88,26 @@ regdemo(2, function(pos)
 			})
 	end)
 
-regdemo(3, function(pos)
+regdemo(3, "Tornado", function(pos)
 		minetest.add_particlespawner_advanced({
 				amount = 200,
-				time = 0,
+				time = 2,
 				pos = {
-					x = {pos.x, -10, 20},
-					y = {pos.y, -10, 0, 20},
-					z = {pos.z, -10, 0, 0, 20}
+					x = {pos.x - 10, 0, 20},
+					y = {pos.y, 0, 0, 10},
+					z = {pos.z - 10, 0, 0, 0, 20}
 				},
 				velocity = {
-					x = {0, -5, 0, 0, 10},
-					y = {0, -5, 0, 10},
-					z = {0, 5, -10}
+					x = {-5, 0, 0, 0, 10},
+					y = {0, 0, 0, 10},
+					z = {5, 0, -10}
 				},
-				expirationtime = {1},
+				acceleration = {
+					x = {2.5, 0, -5},
+					y = {5},
+					z = {2.5, 0, 0, 0, -5}
+				},
+				expirationtime = {2},
 				texture = blackdot,
 				size = {1, 0, 0, 0, 0, 4}
 			})